Home / 30,621.24-42,258.92-18,683.87

Finding the Fourth Proportional to 30,621.24, 42,258.92 and 18,683.87

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Solution

The fourth proportional to 30,621.24, 42,258.92 and 18,683.87 is: 25,784.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,621.24 : 42,258.92 = 18,683.87 : x
  2. Step 2: Convert to fraction form
    30,621.24/42,258.92 = 18,683.87/x
  3. Step 3: Cross multiply
    30,621.24x = 42,258.92 × 18,683.87
  4. Step 4: Simplify right side
    30,621.24x = 789,559,862.91
  5. Step 5: Solve for x
    x = 789,559,862.91/30,621.24
  6. Step 6: Final answer
    x = 25,784.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.